1. Preheat oven to 400° F. Lightly coat a baking sheet with cooking spray.
2. Cut muffins in half & place on baking sheet. Place in oven & bake 1-2 minutes to lightly toast.
3. Evenly spread tomato sauce on each muffin half.
4. Top mini pizzas with about 1 Tbsp of each topping.
5. Bake 8-10 minutes or until muffins are lightly browned & cheese is melted.
6. Let cool 1-2 minutes before serving!